Dump-car.



s.'oTxs. DUMPCAR.

APPLICATION FILED AUG. 13. 1907.

lPatented Nov.30, 1909.

6 SHEETS-SHEET 1.

W'znesses.- I 1 l Inventor.

S. OTIS. DUMP GAR.

APPLIoATIoN FILED AUG. 13. 1907.

'z'nesses: 'i I fnuenibr.

Patented N130, 1909.

6 SHEETS-.SHEET Z.

s. om. DUMP UAR.

APPLICATION FILED AUG. 13. 1907.

ANDREW. u. ummm D01 Puo'mumosmmgns. WASHINGTON. D4 c.

Patented N0V.3O,1909.A

6 SHEETS-SHEET 3.

S. O'IIS.v

DUMP GAR.

APPLIoATIoN FILED AUG.13. 1907.

941,381. Patented Nov. 3o, 1909.

6 SHEETS-SHEET 4.

' WITNESSES:

' INVENTO. YMQMJ/y! I ATTORNEYS S. OTIS.

DUMP GAR. APPLIUATION FILED AUG. 13. 1907,.

Patented Nov. 30, 1909.

6 SHEETS- SHEET 5.

MM INVENrOR.

A TTORN E YS.

WITNESSES:

nauw, e. 6mm.' cc., PnovnlLmlcnnxPnERs. wAsNmGmN. n, c.

Patented Nov. 30, 1909.

6 SHEETS-SHEET 6.

nu Y

narran s'rArEs PATENT entre.

SPENCER OTIS, OF CHICAGO, ILLINOIS, ASSIGrNOR TO NATIONAL DUMP GARCOMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF MAINE.

DUMP-CAR.

Specification of Letters Patent.

v Patented Nov.. 39, 1909.

To all whom t 'may concern.:

Be it known that I, SPENCER Oris, a citi* zen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Dump-Cars, of which thefollowing is a specification.

My invention relates to improvements indump cars, and has for its objectto provide an improved door operating and controlling mechanism withsuitable locking devices.

Another vobj ect is to provide a locking device that shall hold the doorfrom falling back when it is closed, but that shall permit it to openfreely when desired.

Other objects of my invention are to provide a new and improved windingdrum for the chain which comprises a part of the door controllingmechanism, to provide positive means for opening and closing the door,

and also to provide a shield to protect certhe controlling mechanism;Fig. 5 is a planV view ofthe parts shown in Fig. 4; Figs. 6 and 7 areviews of amodification corresponding respectively to Figs. 4 and 5;-Fig. 8 is a section of the chain drum taken on the line 8, 8 of Fig. 9;Fig. 9 is a transverse section of the chain drum; Fig. 10 is a detailshow-l ing the protective shields; Fig. 11 is a section on the line 11of Fig. 10 looking in the direction of the arrow; and Fig. 12 is anelevation looking in the same direction as in Fig. 11.

The car body 12 has the doors 13 pivoted at 14, and normally forming thegreater part of its floor. To the under sideof each door 13 are affixedseveral framesor tracks 13a, each of which rests on a shaft 15 and thisin turn rests on a track 16. The shaft 15 constitutes a movable sill. Asmore clearly shown in Fig. 4, the track 16 has terminal level portions1621 at the lowerend and 16b at the upper end. The shaft 15 carries achain drum 17 with two anges 18 thereon, which are spaced apart by thethickness of the chain 19, thus forcing the chain to wind upon itself,as shown in Figs. 8 and 9. Said chain 19 is attached at one end to thedrum 17 and at the other end 20 near the upper end of the inclined track16. The shaft 15 also carries a ratchet 21, and a reversible pawl 22mounted on the operating handle 23 engages therewith. A plate 24 is alsomounted on the shaft and has flanges 25 bent over to act as guides andconstrain the plate to move along the in clined track'16. This plate 24carries a dog 26 adapted to engage the ratchet 21 and counterweighted at27, as shown in Fig. 4. Furthermore, theA late carries a catch 28adapted, when desired, to engage the dog 26 and withhold it from theratchet 21. At the lower end of the inclined track is a stop 29, adaptedto withhold the catch 28from engagement with the dog 26. At the upperend of the track is another stop 30 adapted to throw the dog 26 out ofengagement with the ratchet 15 and into position to be retained by thecatch 28. In addition to the chains 19 which wrap about the drums 18,there are other chains 1,9a wound oppositely on the shaft 15 and `havingtheir free ends attached to the door at 19h.

On referring to the right hand portions of Fig. 3', it will be seen thatthe shaft 15 is not continuous throughout the length of the car, but iscomposed of sections the adjacent ends being terminated by drums 18. Thedumping doors are divided into sections corresponding to those of theshaft 15 and there Would'be a tendency for dumped material to fall onthe chains 19 and the drums 17, and obstruct their proper working.Shields 32 are therefore attached to the cross girder 83 on which thetracks 16 are hung, and these shields 32 spread out over the chains 19so as to Iprotect them from falling dumped material.` The drums 17 onthe adjacent ends of the shaft 15 act in conjunction with the tracks 16to prevent longitudinal displacement of said shaft 15. As a furthermeans to the same end, the collars 31 are placed upon the shaft 15. Allthis will be clear from an inspection of Fig. 3.

.When it is desired to move the shaft 15 up from the position shown infull. lines in Fig.

30 disengages the dog 26 from the ratchet 21. lVhen desired the pawl. 22may be thrown over in a position opposite to that shown and the lever 23used to start the shaft 15 down the track. It will descend freely in asmuch as the dog 26 is held, as shown in dotted lines, but when it hasreached the lower level track 1Ga the stop 29 will disengage the catch28 and the dog 2G will then be in position for again closing the door.

' The eXtra chains 19a are provided in order to make the door openpositively upon proper rotation of the lever 23. A reference to Fig. 1shows that both chains 19 and 19a wind on the under side of the shaft 15and that either one will unwind while the other is winding up. Vith thisarrangement the shaft 15 rolls on the track 16 and slides on the track13a. However, the chains 19 and 195L may wind on the upper side of theshaft 15, but in any case it is essential that they shall windoppositely on said shaft.

rPhe modification shown in Figs. 6 and 7 is similar to that of Figs. 4and 5, except that the dog 26 is not thrown automatically from itsoperative to its inoperative position, and vice-versa, but the changemust be made by the operator. This dog 2G may be disengaged from theratchet 21 by being struck with a hammer on the shoulder 26a and it maybe rengag'ed with the ratchet by being thrown over by hand. lt will benoted that the pins 25"3i and 25b in the plate 24 perform the samefunction as the iianges 25 shown in Figs. 4 and 5.

I claim 1. ln door-controlling mechanism including' a shaft on a track,a carriage borne by the shaft mounted to slide on the track, saidcarriage being' provided with mechanism for preventing' the shaft frommovement in one direction, and means for disengag'ing' said mechanismwhen desired.

2. In door-controlling mechanism including' a shaft on a track, acarriage borne by the shaft mounted te slide on the track, said carriagebeing' provided with mechanism for preventing the shaft from movement inone direction, and means for holding' said mechanism in a disengagedposition when desired.

3. In door-controlling' mechanism including' a shaft on a track, a platerotatably mounted on the shaft, and guides en the plate engaging' thetrack.

4. ln door-controlling' mechanism, a shaft bearing a ratchet, a crankbearing' a reversible pawl, mechanism for preventing' rotation of theshaft in one direction, and means for throwing' said mechanism intoinoperative relation.

ln door-controlling mechanism, a shaft bearing' a ratchet, a crankbearing' a reversible pawl, mechanism for preventing rotation of theshaft in one direction, and means for automatically throwing saidmechanism into inoperative position.

6. ln door-controlling mechanism including a shaft and an inclinedtrack, a device associated with the shaft pre\\'enting downward motionalong' the track, means at the upper end to render the deviceinoperative, and means at the lower end to restore it to operativeness.

7. In door-controlling mechanism, a shaft, an inclined track thereforhavingterminal llevel portions, a device associated with the shaft whichprevents its downward movement along the track, means associated withthe upper level portion for rendering' the device inoperative, and meansassociated with the lower level portion for restoringthe device tooperati\f'eness.

S. In door-controlling mechanism including' a shaft, a ratchet on theshaft, a dog adapted to engage the ratchet, and means for disengaging'the dog from the ratchet.

9. ln door-controlling' mechanism ineluding a shaft, a ratchet on theshaft, a detent dog adapted to engage the ratchet, and a catch forretaining' the dog in disengagement from the ratchet.

10. In door-controlling mechanism, a shaft, an inclined track therefor,an operating handle connected to the shaft, a chain, a drum on the shaftwith one end of the chain attached thereto, a carriage mounted on theshaft and adapted Ato slide along the track, a ratchet on the shaft, anda dog mounted on the carriage and adapted to engage the ratchet.

11. In door-controlling mechanism, a shaft, an inclined track therefor,an operating handle connected to the shaft, a chain, a drum on the shaftwith one end of the chain att-ached thereto, a carriage mounted on theshaft and adapted to slide along the track, a ratchet on the shaft, anda dog mounted on the carriage and adapted in one position to engage theratchet and in another position to clear it.

12. In door-controlling mechanism, a shaft, an inclined track therefor,an operating handle with ratchet and pawl connection to the shaft, achain, a drum on the shaft about which the chain is adapted to wind, acarriage mounted on the shaft and adapted to slide along the track, a.dog` mounted on the carriage and normally adapted to engage the ratchet,a catch also mounted on the carriage so as to withhold the dog from theratchet, a stop at the lower end of the track so placed as to withdrawthe catch arnesi from the dog, and another stop at the upper end of thetrack so placed as to push the dog away from the ratchet toward thecatch.

13. In doorcontrolling mechanism including a shaft and a chain, flangeson the shaft separated by substantially the thickness vof the chain, oneend of the chain being attached to the shaft between the flanges,whereby the chain must wind upon itself.

14. In doorcontrolling mechanism, a shaft, an inclined track therefor, achain with one end attached to a fixed portion of the car, and a drum onthe shaft with flanges spaced apart by substantially the thickness ofthe chain, the other end of the chain being attached to the drum.

15. In a dump car a hinged door, a track having an inclined part, andhaving a horizontal part opposite the door hinges, a shaft, a chainsecured to said shaft and to said door, said parts being so related thatrotation of the shaft in one direction winds the chain thereon and drawsthe shaft from said horizontal part of the track and toward the hingededge of the door.

16. In a dump car a hinged door, a track beneath said door and slopingupwardly toward the free edge thereof, a shaft movable along said track,a chain secured to said shaft and door, means whereby rotation of saidshaft in one direction causes it to move on said track toward the freeedge of said door and to unwind said chain therefrom, and rotation ofthe shaft in the opposite direction causing the chain to wind thereonand draw said shaft toward the hinged edge of said door.

17. In a dump car having a door, a shaft with two chains oppositelywound thereon, one chain being attached to the door and the other chainattached to the frame-work of the car. l

18. In a dump car having a door, a shaft with two chains oppositelywound thereon, one chain being attached to the door and serving toassist in opening it and the other chain being being attached to theframework of the car and serving to close the door.

19. In a door-controlling mechanism, a shaft having two oppositely woundchains attached thereto, one of said chains being also attached to thedoor.

20. In a door supporting mechanism, two supporting tracks, shaftsresting on said tracks, chain drums mounted adjacent the ends of saidshafts, said drums lying between said tracks and abutting against eachother,

and collars secured to said shafts on the side of the tracks oppositesaid drums.

21. In door-controlling mechanism, two

adjoining shafts with chain drums on their adjacent ends,'and supportingtracks under the shafts beside said drums.

22. In doorcontrolling mechanism, two

25. In a dump car a hinged floor section,

xed floor sections at each side of said hinged section, tracks beneathsaid fixed Hoor sections, a shaft movable along said tracks, shieldplates depending from said fixed sections and extending outwardly oneach side beyond said tracks, and means beneath and independent of saidshield plates for causing said shaft to move along said tracks whenrotated.

26. In a dump car a hinged floor section, fixed floor sections at eachside of said hinged section, tracks -beneath said iixed floor sections,a shaft movable along said tracks, shield plates depending from saidfixed floor sections, means for actuating said shaft, said shield platesbeing bent outwardly beyond said track and actuating means and thendownwardly to shield said track and actuating means for dumped material.

27. In a dump car hinged floor sections extending outwardly from thelongitudinal central part of the car toward the side thereof, transversefixed ioor sections between said hinged sections, tracks beneath saidfixed floor sections, a shaft resting on and movable along said tracks,means at the end of the car for rotating said shaft, chains attached tosaid` shaft and to other parts of the car for causing said shaft to movebodily when rotated, said chains lying adjacent to said tracks, andshield plates depending from said fixed floor sections and overlyingsaid tracks and chains.

28. In a dump car, a shaft, two oppositely wound chains attachedthereto, a ratchet on the shaft, a lever with a reversible pawl adaptedto engage the ratchet, and means to check backward movement of the shaftbetween the strokes of the lever.

29. In a dump car a hinged door, an inclined track, a shaft resting onsaid track and movable thereon toward and from the hinged edge of saiddoor, said track being so disposed that said shaft is beneath said doorin all of its positions, and a chainV secured to said shaft and doorrespectively.

SPENCER OTIS.

Witnesses:

CARL A. RICHMOND, ANNIE C. COURTENAY.

